Gas heating-stove.



Nu. 650,603. Patented May 29, |900. M. GRISWOLD, 1n.

GAS HEATING STOVE.

(Application led Dec. 21, 1899.)

3 Sheets-Shet l.

(No Model.)

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No. 650,603. Patented May 29, |900. M. GHISWOLD., IR.

GAS' HEATING s'TovE.

[Appliction led Dec. 21, 1899.)

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(Applicatqn fried Dec. 21, 1899.)

3 Sheets Sheet 3.

(No Model.)

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UNITED STATES PATENT OFFICE.

MATTHEWv eniswoLD, JR., oF ERIE, PENNSYLVANIA.

. GAS HEATlNG-STOVE.

SPECIFICATION forming part of Letters Patent N o. 650,603, dated May 29, 1900'. Application filed December 21, 1899. Serial No. 741,126. (No model.)

To all whom t may concern.- Y

Be it known that l, MATTHEW GRIswoLn, J r., a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsyl vania, have invented certain new and useful Improvementsin Gas Heating-Stoves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, forming part of this specification.

This invention relates to improvements in gas heating-stoves; and it consists, substantially, in the features thereof hereinafter set forth, described, and claimed, and illustrated in the accompanying drawings, in which- Figure l is a vertical section of my improved gas heating-stove on `the line a 0c in Figs. 2 and 4. Fig. 2 is a vertical section of the same on the line y 'yin Fig. 1. Fig. 3 is a top or plan view of the same. Fig. 4. is a transverse section of the lower part thereof on the line e' a in Fig. l.

The stove thus illustrated is designed particularly for burning gas fuel and is provided with both air-Iiues and flues for carrying o the products of combustion. Many of the stoves designed for burning gas fuel have no provision for carrying 0E the products of combustion, and others so provided apply the heat of the gas fuel burned to the air-dues unevenly, so that the best results are notrealized therefrom. Again, in the better types of stoves of this character the ends and back of the stove form portions of the air-fines and cannot therefore be removed and replaced with new ones' when cracked or burned out without practically rebuilding the entire stove. To overcome these difficulties, I have so constructed the stove and located the airflues therein that not only is there a comparatively even distribution of the heat generated to all of the air passing through them, but the entire system of flue and burner mechanism can be removed from the stovebody and the whole or parts thereof be replaced with new portions Without replacing any portion of the outside of the stove, thus making the repair thereof a comparatively y simple matter.

In the drawings, A is the base of the stove; B, the front, B the ends,and C the back, thereof, these parts comprising the stovebody. In the lower part of the stove-bod)T therev is a gas-burner, made in two sections D and D', the base A being provided with openings a to supply air thereto. In the back of the stove-body there is a vertical cham-ber E, which is substantially the same width and height as the stove-body. The bottom of this chamber E is open, and through the base A there is an opening a' equal in area with the open bottom of the chamber E, so that air can pass upward therethrough.

From the top of the chamber E a horizontal chamber F extends forward to the front of the stove, and in this chamber F there is a bafie-plate f, which extends from the rear of the chamber forward nearly to the front thereof, so that air passing up through the chamber E must pass under the baffle-plate f entirely over the plate f before it escapes past the front edge of the bafiie-plate f, and as the plate e, forming the inside wall of the chamber E, and the plate f', forming the lower wall of the chamber F, form the back and top of the fuel combustion-chamber of the stove it is obvious that the air in passing over the plates will become thoroughly heated before being discharged into the flue's above, as hereinafter described. In addition to the air-inlet chamberE, I place two pipes or flues Grand Gr' in lthecombustion-chamber,each of which passes down through openings between the portions D Dof the gas-burner and through the base A, while the upper ends thereof extend through the plate f of the chamber F, so that air will pass up freely therethrough into .the chamber F below the baffle-plate f. In this manner a large amount of air passes up through and adjacent to the combustionchamber to be heated thereby.

. The front B and the ends B of -the stovebody I have shown as curved plates, with the gas-burner surrounded at the front and ends by a grating H, adapted to retain clinkers or other non-combustible material placed upon the burners from contact with the front and ends of the stove-body, thus vljiermitting me IOO to construct both the front and ends of the stove-body with illuminated mica-filled openings.

In the top of the stove-body I place fines I I at the sides, which at their lower ends open into the ends of the combustion -chamber around and over the ends of the chamber F, as illustrated by the arrows t' t', their upper ends opening into a hollow chamber J, which is provided at its rear with a stoVepipe-thimble j in the usual manner, to which ordinary stovepipe may be attached. Between the fines I I are also vertical iues K K K2, the lower ends of which open into the chamber F above the baffle-plate f therein, while the upper ends of these fines extend up through the top of the hollow chamber J, so as to discharge the heated air passing np therethrough out into the room. It will be observed that the construction and arrangement of the heating-chambers E and F and the heating-fines G G', with relation to the base, front, ends, and back of the stove-body, is such that they or any part of them can be taken out and replaced without having to replace any portion of the stove-body, andas these parts are liable to be burned out frequently in stoves of this type this feature of the construction is an irnport-ant one.

Having thus described my invention, so as to enable others to construct and use the same, what I claim as new, and desire to secure by Letters Patent of the United States, is

l. In a gas heating-stove, the combination of a vertical shell comprising the walls of a vertical draft-chamber and the back of a combustion-chamber, independent of and separated from the back wall of the stove-body,

and a shell comprising the walls of a horizontal chamber, communicating at its rear with the top of said vertical chamber and forming the top of a combustion-chamber, and a baffleplate extending from the rear nearly to the front of said horizontal chamber, substantially as set forth.

2. In a gas heating-stove, the combination of a stove-bod y, a gas-burner in the lower portion thereof, a vertical shell independent of the walls of the stove-body, forming the back of the combustion chamber and opening through the stove-body base, a horizontal shell forming the walls of a chamber over the topof the combustion-chamber and communicating at its rear with the top of said vertical shell, and pipes forming fines extending.

from openings in the stove-base up through the combustion-chamber and into the bottom of said horizontal shell, substantially as set forth.

3. In a gas heating-stove, the combination of a stove-body inclosing a combustion-chamber, shells, the walls of which form vertical air-fines, extending up through the combustion-chamber, and a vertical plate forming the rear wall of the con1bustion-chamber,and the inner wall of a vertical air-line, a horizontal shell communicating with said vertical air-lines and with said vertical back flue, forming the top of said combustion-chamber, and a baffle-plate in said horizontal shell, dividing it horizontally, substantially as set forth.

4. In a gas heating-stove, the combination of a stove-body inclosing the sides and the bottom of a combustion-chamber, ashell forming the back of said combustion-chamber and forming an air flue, shells extending up through the said combustion-chamber and forming air-fines, a horizontal shell communicating with said air-fines and forming the top of said combustion-chamber, pipes forming fines for the products of combustion extending from the top of the ends of said combustion-chamber upward into a hollow shell on the top ofsaid fines, and shells forming air-dues extending up from the horizontal shell forming the top of the combustion-cham ber, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

MATTHEW GRISVOLD, .I R. Witnesses:

H. J. CURTzE, FRED EINFELDT. 

